Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 448 · 40 questions

The fast method (Shift both): How much makes the second number round? 68 needs 2 to make 70. Add that amount to BOTH numbers. Take away the round number.

1. 1.411 − 27 =
2. 2.306 − 88 =
3. 3.507 − 59 =
4. 4.108 − 46 =
5. 5.167 − 36 =
6. 6.297 − 27 =
7. 7.519 − 47 =
8. 8.508 − 19 =
9. 9.219 − 87 =
10. 10.105 − 79 =
11. 11.570 − 57 =
12. 12.508 − 37 =
13. 13.333 − 67 =
14. 14.251 − 16 =
15. 15.159 − 58 =
16. 16.235 − 97 =
17. 17.416 − 28 =
18. 18.54 − 37 =
19. 19.163 − 57 =
20. 20.279 − 36 =
21. 21.333 − 29 =
22. 22.180 − 46 =
23. 23.308 − 46 =
24. 24.248 − 36 =
25. 25.523 − 69 =
26. 26.208 − 49 =
27. 27.584 − 18 =
28. 28.436 − 99 =
29. 29.172 − 17 =
30. 30.184 − 29 =
31. 31.410 − 18 =
32. 32.157 − 56 =
33. 33.306 − 99 =
34. 34.326 − 88 =
35. 35.321 − 36 =
36. 36.147 − 99 =
37. 37.462 − 67 =
38. 38.143 − 99 =
39. 39.70 − 28 =
40. 40.117 − 46 =

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